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B520 Class T30A

America ASTM B520ClassT30A 电子方面用镀锡包铜钢丝的规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B520ClassT30A / B520 Class T30A
Category Grade Standard Region/Area Standard Content
Metals B520 Class T30A ASTM B520 America 电子方面用镀锡包铜钢丝的规范

Chemical composition(mass fraction)(wt.%) of the B520 Class T30A

Element Min Max Similar

Mechanical Properties of steel grade B520 Class T30A

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
139 (≥) 749 (≥) 33 23 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade B520 Class T30A

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
12 - -     0.42 -  
826 911 - 41.3 333   -  
917 - 42 44.2   421 434

Heat Treatment of steel grade B520 Class T30A

Heat treated : 1839°C - 1964°C

Technological Curves of steel grade B520 Class T30A

Cross Reference Table (Equivalent Grade) of B520 Class T30A

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